title: Induction, isolation, and characterization of aspergillus niger mutant strains producing elevated levels of beta-galactosidase.
abstract: An Aspergillus niger mutant strain, VTT-D-80144, with an improvement of three- to fourfold in the production of extracellular beta-galactosidase was isolated after mutagenesis. The production of beta-galactosidase by this mutant was unaffected by fermentor size, and the enzyme was also suitable for immobilization.
mesh_terms: D001234:Aspergillus niger / Q000201:enzymology* / Q000235:genetics / Q000254:growth & development; D004790:Enzyme Induction; D005696:Galactosidases / Q000096:biosynthesis*; D009154:Mutation; D001616:beta-Galactosidase / Q000096:biosynthesis*
chemical_list: D005696:Galactosidases; D001616:beta-Galactosidase